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        <a href="papyros-module.html">Package&nbsp;papyros</a> ::
        Module&nbsp;base
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<h1 class="epydoc">Source Code for <a href="papyros.base-module.html">Module papyros.base</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-docstring">'''Core papyros API classes.'''</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-name">__all__</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line">    <tt class="py-string">'TaskDispatcher'</tt><tt class="py-op">,</tt> <tt class="py-string">'TaskQueue'</tt><tt class="py-op">,</tt> <tt class="py-string">'Worker'</tt><tt class="py-op">,</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line">    <tt class="py-string">'ClosedTaskDispatcherError'</tt><tt class="py-op">,</tt> <tt class="py-string">'ClosedTaskQueueError'</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-op">]</tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">time</tt> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">threading</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">Queue</tt> <tt class="py-keyword">import</tt> <tt class="py-name">Queue</tt><tt class="py-op">,</tt> <tt class="py-name">Empty</tt><tt class="py-op">,</tt> <tt class="py-name">Full</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-0" class="py-name" targets="Package papyros=papyros-module.html"><a title="papyros" class="py-name" href="#" onclick="return doclink('link-0', 'papyros', 'link-0');">papyros</a></tt><tt class="py-op">.</tt><tt id="link-1" class="py-name" targets="Module papyros.task=papyros.task-module.html"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-1', 'task', 'link-1');">task</a></tt> <tt class="py-keyword">import</tt> <tt id="link-2" class="py-name" targets="Class papyros.task.Task=papyros.task.Task-class.html"><a title="papyros.task.Task" class="py-name" href="#" onclick="return doclink('link-2', 'Task', 'link-2');">Task</a></tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-3" class="py-name"><a title="papyros" class="py-name" href="#" onclick="return doclink('link-3', 'papyros', 'link-0');">papyros</a></tt><tt class="py-op">.</tt><tt id="link-4" class="py-name" targets="Method papyros.base.TaskDispatcher.execute()=papyros.base.TaskDispatcher-class.html#execute,Module papyros.execute=papyros.execute-module.html,Method papyros.task.Task.execute()=papyros.task.Task-class.html#execute"><a title="papyros.base.TaskDispatcher.execute
papyros.execute
papyros.task.Task.execute" class="py-name" href="#" onclick="return doclink('link-4', 'execute', 'link-4');">execute</a></tt> <tt class="py-keyword">import</tt> <tt id="link-5" class="py-name" targets="Class papyros.execute.ExecuteIterator=papyros.execute.ExecuteIterator-class.html"><a title="papyros.execute.ExecuteIterator" class="py-name" href="#" onclick="return doclink('link-5', 'ExecuteIterator', 'link-5');">ExecuteIterator</a></tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-6" class="py-name"><a title="papyros" class="py-name" href="#" onclick="return doclink('link-6', 'papyros', 'link-0');">papyros</a></tt> <tt class="py-keyword">import</tt> <tt id="link-7" class="py-name" targets="Variable papyros.log=papyros-module.html#log"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-7', 'log', 'link-7');">log</a></tt><tt class="py-op">,</tt> <tt id="link-8" class="py-name" targets="Class papyros.PapyrosError=papyros.PapyrosError-class.html"><a title="papyros.PapyrosError" class="py-name" href="#" onclick="return doclink('link-8', 'PapyrosError', 'link-8');">PapyrosError</a></tt><tt class="py-op">,</tt> <tt id="link-9" class="py-name" targets="Class papyros.TimeoutError=papyros.TimeoutError-class.html"><a title="papyros.TimeoutError" class="py-name" href="#" onclick="return doclink('link-9', 'TimeoutError', 'link-9');">TimeoutError</a></tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line"> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line"><tt class="py-comment">#========== TaskDispatcher =====================================================</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="ClosedTaskDispatcherError"></a><div id="ClosedTaskDispatcherError-def"><a name="L19"></a><tt class="py-lineno"> 19</tt> <a class="py-toggle" href="#" id="ClosedTaskDispatcherError-toggle" onclick="return toggle('ClosedTaskDispatcherError');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="papyros.base.ClosedTaskDispatcherError-class.html">ClosedTaskDispatcherError</a><tt class="py-op">(</tt><tt class="py-base-class">PapyrosError</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ClosedTaskDispatcherError-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="ClosedTaskDispatcherError-expanded"><a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line">    <tt class="py-docstring">'''Attempted to modify a closed L{TaskDispatcher}.'''</tt> </tt>
</div><a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher"></a><div id="TaskDispatcher-def"><a name="L22"></a><tt class="py-lineno"> 22</tt> <a class="py-toggle" href="#" id="TaskDispatcher-toggle" onclick="return toggle('TaskDispatcher');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html">TaskDispatcher</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="TaskDispatcher-expanded"><a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line">    <tt class="py-docstring">'''A I{TaskDispatcher} receives L{tasks &lt;Task&gt;} from a L{TaskQueue} and</tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line"><tt class="py-docstring">    dispatches them to L{workers &lt;Worker&gt;}.</tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher.__init__"></a><div id="TaskDispatcher.__init__-def"><a name="L27"></a><tt class="py-lineno"> 27</tt> <a class="py-toggle" href="#" id="TaskDispatcher.__init__-toggle" onclick="return toggle('TaskDispatcher.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">size</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher.__init__-expanded"><a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line">        <tt class="py-docstring">'''Initialize this dispatcher.</tt> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line"><tt class="py-docstring">        @param size: The maximum number of unassigned tasks (unlimited by default).</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt>  <tt class="py-line"><tt class="py-docstring">            Trying to push a new L{Task} when C{size} tasks are unassigned blocks</tt> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line"><tt class="py-docstring">            or raises L{TimeoutError}.</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt> <tt class="py-op">=</tt> <tt class="py-name">Queue</tt><tt class="py-op">(</tt><tt class="py-name">size</tt><tt class="py-op">)</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt> <tt class="py-op">=</tt> <tt class="py-name">set</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher.make_queue"></a><div id="TaskDispatcher.make_queue-def"><a name="L37"></a><tt class="py-lineno"> 37</tt> <a class="py-toggle" href="#" id="TaskDispatcher.make_queue-toggle" onclick="return toggle('TaskDispatcher.make_queue');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#make_queue">make_queue</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">size</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher.make_queue-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher.make_queue-expanded"><a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line">        <tt class="py-docstring">'''Create a new L{TaskQueue} and associate it with this dispatcher.</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line"><tt class="py-docstring">        @param size: The L{size &lt;TaskQueue.__init__&gt;} of the new task queue.</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: The new L{TaskQueue}.</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt id="link-10" class="py-name" targets="Class papyros.base.ClosedTaskDispatcherError=papyros.base.ClosedTaskDispatcherError-class.html"><a title="papyros.base.ClosedTaskDispatcherError" class="py-name" href="#" onclick="return doclink('link-10', 'ClosedTaskDispatcherError', 'link-10');">ClosedTaskDispatcherError</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line">        <tt class="py-name">task_queue</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-11" class="py-name" targets="Method papyros.base.TaskDispatcher._make_queue()=papyros.base.TaskDispatcher-class.html#_make_queue,Method papyros.distributed.PyroTaskDispatcher._make_queue()=papyros.distributed.PyroTaskDispatcher-class.html#_make_queue"><a title="papyros.base.TaskDispatcher._make_queue
papyros.distributed.PyroTaskDispatcher._make_queue" class="py-name" href="#" onclick="return doclink('link-11', '_make_queue', 'link-11');">_make_queue</a></tt><tt class="py-op">(</tt><tt class="py-name">size</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-12" class="py-name" targets="Method papyros.base.TaskQueue._get_proxy()=papyros.base.TaskQueue-class.html#_get_proxy,Method papyros.distributed.PyroTaskQueue._get_proxy()=papyros.distributed.PyroTaskQueue-class.html#_get_proxy"><a title="papyros.base.TaskQueue._get_proxy
papyros.distributed.PyroTaskQueue._get_proxy" class="py-name" href="#" onclick="return doclink('link-12', '_get_proxy', 'link-12');">_get_proxy</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt><tt class="py-op">.</tt><tt class="py-name">add</tt><tt class="py-op">(</tt><tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">task_queue</tt> </tt>
</div><a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher.execute"></a><div id="TaskDispatcher.execute-def"><a name="L49"></a><tt class="py-lineno"> 49</tt> <a class="py-toggle" href="#" id="TaskDispatcher.execute-toggle" onclick="return toggle('TaskDispatcher.execute');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#execute">execute</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">tasks</tt><tt class="py-op">,</tt> <tt class="py-param">timeout</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">ordered</tt><tt class="py-op">=</tt><tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-param">chunksize</tt><tt class="py-op">=</tt><tt class="py-number">1</tt><tt class="py-op">,</tt> <tt class="py-param">qsize</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher.execute-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher.execute-expanded"><a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line">        <tt class="py-docstring">'''Execute the given tasks.</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line"><tt class="py-docstring">        @param tasks: An iterable of L{tasks &lt;Task&gt;} to be executed.</tt> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line"><tt class="py-docstring">        @param timeout: An upper bound of how long is a task expected to take.</tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line"><tt class="py-docstring">            Useful to prevent waiting for tasks that take forever to complete</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line"><tt class="py-docstring">            for whatever reason.</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line"><tt class="py-docstring">        @param ordered: If True, the order of the yielded results matches the</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line"><tt class="py-docstring">            the order of the tasks that generated them. If False, the results'</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line"><tt class="py-docstring">            order is unspecified.</tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line"><tt class="py-docstring">        @param chunksize: The C{tasks} iterable is chunked into slices of this</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line"><tt class="py-docstring">            size (or less) before being submitted to the dispatcher and workers.</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line"><tt class="py-docstring">        @param qsize: The L{size &lt;TaskQueue.__init__&gt;} of the underlying task queue.</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: An iterator over the results of the executed tasks.</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line"><tt class="py-docstring">        @raises TimeoutError: If a call to the returned iterator's C{next()}</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line"><tt class="py-docstring">            exceeds the C{timeout}.</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-13" class="py-name"><a title="papyros.execute.ExecuteIterator" class="py-name" href="#" onclick="return doclink('link-13', 'ExecuteIterator', 'link-5');">ExecuteIterator</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-14" class="py-name" targets="Method papyros.base.TaskDispatcher.make_queue()=papyros.base.TaskDispatcher-class.html#make_queue"><a title="papyros.base.TaskDispatcher.make_queue" class="py-name" href="#" onclick="return doclink('link-14', 'make_queue', 'link-14');">make_queue</a></tt><tt class="py-op">(</tt><tt class="py-name">qsize</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">tasks</tt><tt class="py-op">,</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line">                               <tt class="py-name">timeout</tt><tt class="py-op">=</tt><tt class="py-name">timeout</tt><tt class="py-op">,</tt> <tt class="py-name">ordered</tt><tt class="py-op">=</tt><tt class="py-name">ordered</tt><tt class="py-op">,</tt> <tt class="py-name">chunksize</tt><tt class="py-op">=</tt><tt class="py-name">chunksize</tt><tt class="py-op">)</tt> </tt>
</div><a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher.num_queues"></a><div id="TaskDispatcher.num_queues-def"><a name="L69"></a><tt class="py-lineno"> 69</tt> <a class="py-toggle" href="#" id="TaskDispatcher.num_queues-toggle" onclick="return toggle('TaskDispatcher.num_queues');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#num_queues">num_queues</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher.num_queues-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher.num_queues-expanded"><a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line">        <tt class="py-docstring">'Return the number of active L{task queues &lt;TaskQueue&gt;} of this dispatcher.'</tt> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt><tt class="py-op">)</tt> </tt>
</div><a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher.num_tasks"></a><div id="TaskDispatcher.num_tasks-def"><a name="L73"></a><tt class="py-lineno"> 73</tt> <a class="py-toggle" href="#" id="TaskDispatcher.num_tasks-toggle" onclick="return toggle('TaskDispatcher.num_tasks');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#num_tasks">num_tasks</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher.num_tasks-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher.num_tasks-expanded"><a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line">        <tt class="py-docstring">'''Return the (approximate) number of unassigned L{tasks &lt;Task&gt;} of this</tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line"><tt class="py-docstring">        dispatcher.</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt><tt class="py-op">.</tt><tt class="py-name">qsize</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher.close"></a><div id="TaskDispatcher.close-def"><a name="L79"></a><tt class="py-lineno"> 79</tt> <a class="py-toggle" href="#" id="TaskDispatcher.close-toggle" onclick="return toggle('TaskDispatcher.close');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#close">close</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher.close-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher.close-expanded"><a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line">        <tt class="py-docstring">'''Release the resources associated with this dispatcher.</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line"><tt class="py-docstring">        A subsequent attempt to modify the dispatcher raises L{ClosedTaskDispatcherError}.</tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt><tt class="py-op">.</tt><tt class="py-name">clear</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
</div><a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher._discard_queue"></a><div id="TaskDispatcher._discard_queue-def"><a name="L87"></a><tt class="py-lineno"> 87</tt> <a class="py-toggle" href="#" id="TaskDispatcher._discard_queue-toggle" onclick="return toggle('TaskDispatcher._discard_queue');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#_discard_queue">_discard_queue</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">task_queue</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher._discard_queue-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher._discard_queue-expanded"><a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line">        <tt class="py-docstring">'''Disassociate the given queue from this dispatcher.</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line"><tt class="py-docstring">        All still unassigned tasks of this queue will be dropped. Attempting to</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt>  <tt class="py-line"><tt class="py-docstring">        push a new task by this queue will raise a RuntimeError.</tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt><tt class="py-op">.</tt><tt class="py-name">discard</tt><tt class="py-op">(</tt><tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line">        <tt id="link-15" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-15', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s discarded %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
</div><a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher._push_task"></a><div id="TaskDispatcher._push_task-def"><a name="L96"></a><tt class="py-lineno"> 96</tt> <a class="py-toggle" href="#" id="TaskDispatcher._push_task-toggle" onclick="return toggle('TaskDispatcher._push_task');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#_push_task">_push_task</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">task</tt><tt class="py-op">,</tt> <tt class="py-param">task_queue</tt><tt class="py-op">,</tt> <tt class="py-param">timeout</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher._push_task-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher._push_task-expanded"><a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line">        <tt class="py-docstring">'''Push the given task from the given task queue to this dispatcher.</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line"><tt class="py-docstring">        @param timeout: If C{timeout is None} and the dispatcher is full, wait</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line"><tt class="py-docstring">            until a slot becomes available. If C{timeout &gt; 0} and the dispatcher</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line"><tt class="py-docstring">            remains full after C{timeout} seconds, or if C{timeout &lt;= 0}</tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line"><tt class="py-docstring">            and the dispatcher is full now, raise L{TimeoutError}.</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line"><tt class="py-docstring">        @raises TimeoutError: If C{timeout} expires before pushing the task.</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">task_queue</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt><tt class="py-op">:</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line">            <tt class="py-name">block</tt> <tt class="py-op">=</tt> <tt class="py-name">timeout</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt> <tt class="py-keyword">or</tt> <tt class="py-name">timeout</tt><tt class="py-op">&gt;</tt><tt class="py-number">0</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line">            <tt class="py-keyword">try</tt><tt class="py-op">:</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt><tt class="py-op">.</tt><tt class="py-name">put</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt id="link-16" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-16', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt><tt class="py-name">task_queue</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">block</tt><tt class="py-op">,</tt> <tt class="py-name">timeout</tt><tt class="py-op">)</tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line">            <tt class="py-keyword">except</tt> <tt class="py-name">Full</tt><tt class="py-op">:</tt> <tt class="py-keyword">raise</tt> <tt id="link-17" class="py-name"><a title="papyros.TimeoutError" class="py-name" href="#" onclick="return doclink('link-17', 'TimeoutError', 'link-9');">TimeoutError</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line">            <tt id="link-18" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-18', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s received new task %s from %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-19" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-19', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt> <tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">RuntimeError</tt><tt class="py-op">(</tt><tt class="py-string">'%s is not authorized at this dispatcher'</tt> <tt class="py-op">%</tt> <tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
</div><a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher._assign_task"></a><div id="TaskDispatcher._assign_task-def"><a name="L113"></a><tt class="py-lineno">113</tt> <a class="py-toggle" href="#" id="TaskDispatcher._assign_task-toggle" onclick="return toggle('TaskDispatcher._assign_task');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#_assign_task">_assign_task</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher._assign_task-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher._assign_task-expanded"><a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line">        <tt class="py-docstring">'''Pop and return the next unassigned non cancelled task.</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line"><tt class="py-docstring">        This method is to called by a L{Worker} of this dispatcher.</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: An unassigned (task, task_queue) tuple, or None if there are</tt> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line"><tt class="py-docstring">            no unassigned tasks.</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">        <tt class="py-keyword">while</tt> <tt class="py-name">True</tt><tt class="py-op">:</tt> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line">                <tt class="py-keyword">raise</tt> <tt id="link-20" class="py-name"><a title="papyros.base.ClosedTaskDispatcherError" class="py-name" href="#" onclick="return doclink('link-20', 'ClosedTaskDispatcherError', 'link-10');">ClosedTaskDispatcherError</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line">            <tt class="py-keyword">try</tt><tt class="py-op">:</tt> <tt id="link-21" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-21', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt><tt class="py-name">task_queue</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__unassigned</tt><tt class="py-op">.</tt><tt class="py-name">get_nowait</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line">            <tt class="py-keyword">except</tt> <tt class="py-name">Empty</tt><tt class="py-op">:</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">                <tt class="py-keyword">return</tt> <tt class="py-name">None</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">task_queue</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__task_queues</tt><tt class="py-op">:</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">                <tt id="link-22" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-22', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s assigned task %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-23" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-23', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line">                <tt class="py-keyword">return</tt> <tt class="py-op">(</tt><tt id="link-24" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-24', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt> <tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
<a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line">            <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line">                <tt id="link-25" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-25', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s discarded task %s from removed queue %s'</tt><tt class="py-op">,</tt> </tt>
<a name="L132"></a><tt class="py-lineno">132</tt>  <tt class="py-line">                          <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-26" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-26', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt> <tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
</div><a name="L133"></a><tt class="py-lineno">133</tt>  <tt class="py-line"> </tt>
<a name="TaskDispatcher._make_queue"></a><div id="TaskDispatcher._make_queue-def"><a name="L134"></a><tt class="py-lineno">134</tt> <a class="py-toggle" href="#" id="TaskDispatcher._make_queue-toggle" onclick="return toggle('TaskDispatcher._make_queue');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskDispatcher-class.html#_make_queue">_make_queue</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">size</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskDispatcher._make_queue-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskDispatcher._make_queue-expanded"><a name="L135"></a><tt class="py-lineno">135</tt>  <tt class="py-line">        <tt class="py-docstring">'''Create a new L{TaskQueue}.</tt> </tt>
<a name="L136"></a><tt class="py-lineno">136</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L137"></a><tt class="py-lineno">137</tt>  <tt class="py-line"><tt class="py-docstring">        Can be overriden by subclasses.</tt> </tt>
<a name="L138"></a><tt class="py-lineno">138</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L139"></a><tt class="py-lineno">139</tt>  <tt class="py-line"><tt class="py-docstring">        @param size: The L{size &lt;TaskQueue.__init__&gt;} of the new task queue.</tt> </tt>
<a name="L140"></a><tt class="py-lineno">140</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: The new L{TaskQueue}.</tt> </tt>
<a name="L141"></a><tt class="py-lineno">141</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L142"></a><tt class="py-lineno">142</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-27" class="py-name" targets="Class papyros.base.TaskQueue=papyros.base.TaskQueue-class.html"><a title="papyros.base.TaskQueue" class="py-name" href="#" onclick="return doclink('link-27', 'TaskQueue', 'link-27');">TaskQueue</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">size</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L143"></a><tt class="py-lineno">143</tt>  <tt class="py-line"> </tt>
<a name="L144"></a><tt class="py-lineno">144</tt>  <tt class="py-line"><tt class="py-comment">#========== TaskQueue ==========================================================</tt> </tt>
<a name="L145"></a><tt class="py-lineno">145</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="ClosedTaskQueueError"></a><div id="ClosedTaskQueueError-def"><a name="L146"></a><tt class="py-lineno">146</tt> <a class="py-toggle" href="#" id="ClosedTaskQueueError-toggle" onclick="return toggle('ClosedTaskQueueError');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="papyros.base.ClosedTaskQueueError-class.html">ClosedTaskQueueError</a><tt class="py-op">(</tt><tt class="py-base-class">PapyrosError</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ClosedTaskQueueError-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="ClosedTaskQueueError-expanded"><a name="L147"></a><tt class="py-lineno">147</tt>  <tt class="py-line">    <tt class="py-docstring">'''Attempted to modify a closed L{TaskQueue}.'''</tt> </tt>
</div><a name="L148"></a><tt class="py-lineno">148</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue"></a><div id="TaskQueue-def"><a name="L149"></a><tt class="py-lineno">149</tt> <a class="py-toggle" href="#" id="TaskQueue-toggle" onclick="return toggle('TaskQueue');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html">TaskQueue</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="TaskQueue-expanded"><a name="L150"></a><tt class="py-lineno">150</tt>  <tt class="py-line">    <tt class="py-docstring">'''An abstraction of a queue of L{tasks &lt;Task&gt;}.</tt> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt>  <tt class="py-line"><tt class="py-docstring">    A I{TaskQueue} is used to L{push} new tasks to be executed and L{pop} results</tt> </tt>
<a name="L153"></a><tt class="py-lineno">153</tt>  <tt class="py-line"><tt class="py-docstring">    from finished tasks (or reraise the exception raised during task execution).</tt> </tt>
<a name="L154"></a><tt class="py-lineno">154</tt>  <tt class="py-line"><tt class="py-docstring">    Task queues should be L{closed &lt;close&gt;} after they are not needed anymore.</tt> </tt>
<a name="L155"></a><tt class="py-lineno">155</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L156"></a><tt class="py-lineno">156</tt>  <tt class="py-line"><tt class="py-docstring">    Clients should not instantiate this class directly; they should call</tt> </tt>
<a name="L157"></a><tt class="py-lineno">157</tt>  <tt class="py-line"><tt class="py-docstring">    L{TaskDispatcher.make_queue} instead.</tt> </tt>
<a name="L158"></a><tt class="py-lineno">158</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L159"></a><tt class="py-lineno">159</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue.__init__"></a><div id="TaskQueue.__init__-def"><a name="L160"></a><tt class="py-lineno">160</tt> <a class="py-toggle" href="#" id="TaskQueue.__init__-toggle" onclick="return toggle('TaskQueue.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">dispatcher</tt><tt class="py-op">,</tt> <tt class="py-param">size</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue.__init__-expanded"><a name="L161"></a><tt class="py-lineno">161</tt>  <tt class="py-line">        <tt class="py-docstring">'''Initialize this task queue.</tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt>  <tt class="py-line"><tt class="py-docstring">        @param dispatcher: The L{TaskDispatcher} to dispatch tasks pushed in</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt>  <tt class="py-line"><tt class="py-docstring">            this queue.</tt> </tt>
<a name="L165"></a><tt class="py-lineno">165</tt>  <tt class="py-line"><tt class="py-docstring">        @param size: The maximum number of completed tasks waiting to be popped</tt> </tt>
<a name="L166"></a><tt class="py-lineno">166</tt>  <tt class="py-line"><tt class="py-docstring">            (unlimited by default).</tt> </tt>
<a name="L167"></a><tt class="py-lineno">167</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L168"></a><tt class="py-lineno">168</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt> <tt class="py-op">=</tt> <tt class="py-name">dispatcher</tt> </tt>
<a name="L169"></a><tt class="py-lineno">169</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt> <tt class="py-op">=</tt> <tt class="py-name">Queue</tt><tt class="py-op">(</tt><tt class="py-name">size</tt><tt class="py-op">)</tt> </tt>
</div><a name="L170"></a><tt class="py-lineno">170</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue.push"></a><div id="TaskQueue.push-def"><a name="L171"></a><tt class="py-lineno">171</tt> <a class="py-toggle" href="#" id="TaskQueue.push-toggle" onclick="return toggle('TaskQueue.push');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#push">push</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">task</tt><tt class="py-op">,</tt> <tt class="py-param">timeout</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue.push-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue.push-expanded"><a name="L172"></a><tt class="py-lineno">172</tt>  <tt class="py-line">        <tt class="py-docstring">'''Add a new L{Task &lt;task&gt;} to this task queue.</tt> </tt>
<a name="L173"></a><tt class="py-lineno">173</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L174"></a><tt class="py-lineno">174</tt>  <tt class="py-line"><tt class="py-docstring">        @param timeout: If C{timeout is None} and the queue's dispatcher is full,</tt> </tt>
<a name="L175"></a><tt class="py-lineno">175</tt>  <tt class="py-line"><tt class="py-docstring">            wait until a slot becomes available. If C{timeout &gt; 0} and the</tt> </tt>
<a name="L176"></a><tt class="py-lineno">176</tt>  <tt class="py-line"><tt class="py-docstring">            dispatcher remains full after C{timeout} seconds, or if C{timeout &lt;= 0}</tt> </tt>
<a name="L177"></a><tt class="py-lineno">177</tt>  <tt class="py-line"><tt class="py-docstring">            and the dispatcher is full now, raise L{TimeoutError}.</tt> </tt>
<a name="L178"></a><tt class="py-lineno">178</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L179"></a><tt class="py-lineno">179</tt>  <tt class="py-line"><tt class="py-docstring">        @raises TimeoutError: If C{timeout} expires before pushing the task.</tt> </tt>
<a name="L180"></a><tt class="py-lineno">180</tt>  <tt class="py-line"><tt class="py-docstring">        @raises ClosedTaskQueueError: If the queue has been closed.</tt> </tt>
<a name="L181"></a><tt class="py-lineno">181</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L182"></a><tt class="py-lineno">182</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt id="link-28" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-28', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt> <tt id="link-29" class="py-name"><a title="papyros.task.Task" class="py-name" href="#" onclick="return doclink('link-29', 'Task', 'link-2');">Task</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L183"></a><tt class="py-lineno">183</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">TypeError</tt><tt class="py-op">(</tt><tt class="py-string">'Task object expected; %r given'</tt> <tt class="py-op">%</tt> <tt id="link-30" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-30', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt> </tt>
<a name="L184"></a><tt class="py-lineno">184</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L185"></a><tt class="py-lineno">185</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt id="link-31" class="py-name" targets="Class papyros.base.ClosedTaskQueueError=papyros.base.ClosedTaskQueueError-class.html"><a title="papyros.base.ClosedTaskQueueError" class="py-name" href="#" onclick="return doclink('link-31', 'ClosedTaskQueueError', 'link-31');">ClosedTaskQueueError</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L186"></a><tt class="py-lineno">186</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt><tt class="py-op">.</tt><tt id="link-32" class="py-name" targets="Method papyros.base.TaskDispatcher._push_task()=papyros.base.TaskDispatcher-class.html#_push_task,Method papyros.dummy.DummyTaskDispatcher._push_task()=papyros.dummy.DummyTaskDispatcher-class.html#_push_task"><a title="papyros.base.TaskDispatcher._push_task
papyros.dummy.DummyTaskDispatcher._push_task" class="py-name" href="#" onclick="return doclink('link-32', '_push_task', 'link-32');">_push_task</a></tt><tt class="py-op">(</tt><tt id="link-33" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-33', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-34" class="py-name"><a title="papyros.base.TaskQueue._get_proxy
papyros.distributed.PyroTaskQueue._get_proxy" class="py-name" href="#" onclick="return doclink('link-34', '_get_proxy', 'link-12');">_get_proxy</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">timeout</tt><tt class="py-op">)</tt> </tt>
</div><a name="L187"></a><tt class="py-lineno">187</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue.pop"></a><div id="TaskQueue.pop-def"><a name="L188"></a><tt class="py-lineno">188</tt> <a class="py-toggle" href="#" id="TaskQueue.pop-toggle" onclick="return toggle('TaskQueue.pop');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#pop">pop</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">timeout</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue.pop-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue.pop-expanded"><a name="L189"></a><tt class="py-lineno">189</tt>  <tt class="py-line">        <tt class="py-docstring">'''Pop a finished L{Task &lt;task&gt;} from this queue.</tt> </tt>
<a name="L190"></a><tt class="py-lineno">190</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L191"></a><tt class="py-lineno">191</tt>  <tt class="py-line"><tt class="py-docstring">        @param timeout: If C{timeout is None} and there are no pending finished</tt> </tt>
<a name="L192"></a><tt class="py-lineno">192</tt>  <tt class="py-line"><tt class="py-docstring">            tasks, wait until one finishes. If C{timeout &gt; 0} and no task has</tt> </tt>
<a name="L193"></a><tt class="py-lineno">193</tt>  <tt class="py-line"><tt class="py-docstring">            finished within C{timeout} seconds, or if C{timeout &lt;= 0} and no</tt> </tt>
<a name="L194"></a><tt class="py-lineno">194</tt>  <tt class="py-line"><tt class="py-docstring">            finished task is available immediately, raise L{TimeoutError}.</tt> </tt>
<a name="L195"></a><tt class="py-lineno">195</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L196"></a><tt class="py-lineno">196</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: The result of a finished task.</tt> </tt>
<a name="L197"></a><tt class="py-lineno">197</tt>  <tt class="py-line"><tt class="py-docstring">        @raises TimeoutError: If C{timeout} expires before poping a task.</tt> </tt>
<a name="L198"></a><tt class="py-lineno">198</tt>  <tt class="py-line"><tt class="py-docstring">        @raises ClosedTaskQueueError: If the queue has been closed.</tt> </tt>
<a name="L199"></a><tt class="py-lineno">199</tt>  <tt class="py-line"><tt class="py-docstring">        @raises Exception: Any exception raised when executing the task is</tt> </tt>
<a name="L200"></a><tt class="py-lineno">200</tt>  <tt class="py-line"><tt class="py-docstring">            reraised here.</tt> </tt>
<a name="L201"></a><tt class="py-lineno">201</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L202"></a><tt class="py-lineno">202</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L203"></a><tt class="py-lineno">203</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt id="link-35" class="py-name"><a title="papyros.base.ClosedTaskQueueError" class="py-name" href="#" onclick="return doclink('link-35', 'ClosedTaskQueueError', 'link-31');">ClosedTaskQueueError</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L204"></a><tt class="py-lineno">204</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> <tt id="link-36" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-36', 'task', 'link-1');">task</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt><tt class="py-op">.</tt><tt class="py-name">get</tt><tt class="py-op">(</tt><tt class="py-name">timeout</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt> <tt class="py-keyword">or</tt> <tt class="py-name">timeout</tt><tt class="py-op">&gt;</tt><tt class="py-number">0</tt><tt class="py-op">,</tt> <tt class="py-name">timeout</tt><tt class="py-op">)</tt> </tt>
<a name="L205"></a><tt class="py-lineno">205</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt> <tt class="py-name">Empty</tt><tt class="py-op">:</tt> <tt class="py-keyword">raise</tt> <tt id="link-37" class="py-name"><a title="papyros.TimeoutError" class="py-name" href="#" onclick="return doclink('link-37', 'TimeoutError', 'link-9');">TimeoutError</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L206"></a><tt class="py-lineno">206</tt>  <tt class="py-line">        <tt id="link-38" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-38', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s popped finished task %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-39" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-39', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt> </tt>
<a name="L207"></a><tt class="py-lineno">207</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-40" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-40', 'task', 'link-1');">task</a></tt><tt class="py-op">.</tt><tt id="link-41" class="py-name" targets="Method papyros.task.Task.result()=papyros.task.Task-class.html#result"><a title="papyros.task.Task.result" class="py-name" href="#" onclick="return doclink('link-41', 'result', 'link-41');">result</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L208"></a><tt class="py-lineno">208</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue.pop_many"></a><div id="TaskQueue.pop_many-def"><a name="L209"></a><tt class="py-lineno">209</tt> <a class="py-toggle" href="#" id="TaskQueue.pop_many-toggle" onclick="return toggle('TaskQueue.pop_many');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#pop_many">pop_many</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">timeout</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue.pop_many-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue.pop_many-expanded"><a name="L210"></a><tt class="py-lineno">210</tt>  <tt class="py-line">        <tt class="py-docstring">'''Pop several finished tasks within the given timeout.</tt> </tt>
<a name="L211"></a><tt class="py-lineno">211</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L212"></a><tt class="py-lineno">212</tt>  <tt class="py-line"><tt class="py-docstring">        @param timeout: Keep popping finished tasks for C{timeout} seconds. If</tt> </tt>
<a name="L213"></a><tt class="py-lineno">213</tt>  <tt class="py-line"><tt class="py-docstring">        C{timeout &lt;= 0}, pop all currently finished tasks.</tt> </tt>
<a name="L214"></a><tt class="py-lineno">214</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L215"></a><tt class="py-lineno">215</tt>  <tt class="py-line"><tt class="py-docstring">        @rtype: list</tt> </tt>
<a name="L216"></a><tt class="py-lineno">216</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: The results of the finished tasks within the given timeout.</tt> </tt>
<a name="L217"></a><tt class="py-lineno">217</tt>  <tt class="py-line"><tt class="py-docstring">        @raises ClosedTaskQueueError: If the queue has been closed.</tt> </tt>
<a name="L218"></a><tt class="py-lineno">218</tt>  <tt class="py-line"><tt class="py-docstring">        @raises Exception: Any exception raised when executing any of the popped</tt> </tt>
<a name="L219"></a><tt class="py-lineno">219</tt>  <tt class="py-line"><tt class="py-docstring">            tasks.</tt> </tt>
<a name="L220"></a><tt class="py-lineno">220</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L221"></a><tt class="py-lineno">221</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">timeout</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L222"></a><tt class="py-lineno">222</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">TypeError</tt><tt class="py-op">(</tt><tt class="py-string">'timeout must be a number'</tt><tt class="py-op">)</tt> </tt>
<a name="L223"></a><tt class="py-lineno">223</tt>  <tt class="py-line">        <tt class="py-name">finished</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L224"></a><tt class="py-lineno">224</tt>  <tt class="py-line">        <tt class="py-name">now</tt> <tt class="py-op">=</tt> <tt class="py-name">time</tt><tt class="py-op">.</tt><tt class="py-name">time</tt> </tt>
<a name="L225"></a><tt class="py-lineno">225</tt>  <tt class="py-line">        <tt class="py-name">end</tt> <tt class="py-op">=</tt> <tt class="py-name">now</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-op">+</tt> <tt class="py-name">timeout</tt> </tt>
<a name="L226"></a><tt class="py-lineno">226</tt>  <tt class="py-line">        <tt class="py-keyword">while</tt> <tt class="py-name">timeout</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">0</tt><tt class="py-op">:</tt> </tt>
<a name="L227"></a><tt class="py-lineno">227</tt>  <tt class="py-line">            <tt class="py-keyword">try</tt><tt class="py-op">:</tt> <tt class="py-name">finished</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-42" class="py-name" targets="Method papyros.base.TaskQueue.pop()=papyros.base.TaskQueue-class.html#pop"><a title="papyros.base.TaskQueue.pop" class="py-name" href="#" onclick="return doclink('link-42', 'pop', 'link-42');">pop</a></tt><tt class="py-op">(</tt><tt class="py-name">timeout</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L228"></a><tt class="py-lineno">228</tt>  <tt class="py-line">            <tt class="py-keyword">except</tt> <tt id="link-43" class="py-name"><a title="papyros.TimeoutError" class="py-name" href="#" onclick="return doclink('link-43', 'TimeoutError', 'link-9');">TimeoutError</a></tt><tt class="py-op">:</tt> <tt class="py-keyword">break</tt> </tt>
<a name="L229"></a><tt class="py-lineno">229</tt>  <tt class="py-line">            <tt class="py-name">timeout</tt> <tt class="py-op">=</tt> <tt class="py-name">end</tt> <tt class="py-op">-</tt> <tt class="py-name">now</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L230"></a><tt class="py-lineno">230</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">finished</tt> </tt>
</div><a name="L231"></a><tt class="py-lineno">231</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue.close"></a><div id="TaskQueue.close-def"><a name="L232"></a><tt class="py-lineno">232</tt> <a class="py-toggle" href="#" id="TaskQueue.close-toggle" onclick="return toggle('TaskQueue.close');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#close">close</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue.close-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue.close-expanded"><a name="L233"></a><tt class="py-lineno">233</tt>  <tt class="py-line">        <tt class="py-docstring">'''Release the resources associated with this task queue.</tt> </tt>
<a name="L234"></a><tt class="py-lineno">234</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L235"></a><tt class="py-lineno">235</tt>  <tt class="py-line"><tt class="py-docstring">        A subsequent attempt to modify the queue raises L{ClosedTaskQueueError}.</tt> </tt>
<a name="L236"></a><tt class="py-lineno">236</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L237"></a><tt class="py-lineno">237</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt><tt class="py-op">.</tt><tt id="link-44" class="py-name" targets="Method papyros.base.TaskDispatcher._discard_queue()=papyros.base.TaskDispatcher-class.html#_discard_queue"><a title="papyros.base.TaskDispatcher._discard_queue" class="py-name" href="#" onclick="return doclink('link-44', '_discard_queue', 'link-44');">_discard_queue</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-45" class="py-name"><a title="papyros.base.TaskQueue._get_proxy
papyros.distributed.PyroTaskQueue._get_proxy" class="py-name" href="#" onclick="return doclink('link-45', '_get_proxy', 'link-12');">_get_proxy</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L238"></a><tt class="py-lineno">238</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
</div><a name="L239"></a><tt class="py-lineno">239</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue._get_finished"></a><div id="TaskQueue._get_finished-def"><a name="L240"></a><tt class="py-lineno">240</tt> <a class="py-toggle" href="#" id="TaskQueue._get_finished-toggle" onclick="return toggle('TaskQueue._get_finished');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#_get_finished">_get_finished</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">task</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue._get_finished-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue._get_finished-expanded"><a name="L241"></a><tt class="py-lineno">241</tt>  <tt class="py-line">        <tt class="py-docstring">'''Push an executed task in the finished queue.</tt> </tt>
<a name="L242"></a><tt class="py-lineno">242</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L243"></a><tt class="py-lineno">243</tt>  <tt class="py-line"><tt class="py-docstring">        Should be called by a L{Worker} only.</tt> </tt>
<a name="L244"></a><tt class="py-lineno">244</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L245"></a><tt class="py-lineno">245</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L246"></a><tt class="py-lineno">246</tt>  <tt class="py-line">            <tt id="link-46" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-46', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s dropped silently finished task %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-47" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-47', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt> </tt>
<a name="L247"></a><tt class="py-lineno">247</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L248"></a><tt class="py-lineno">248</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__finished</tt><tt class="py-op">.</tt><tt class="py-name">put</tt><tt class="py-op">(</tt><tt id="link-48" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-48', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt>        <tt class="py-comment"># block here if the queue is full</tt> </tt>
<a name="L249"></a><tt class="py-lineno">249</tt>  <tt class="py-line">            <tt id="link-49" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-49', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s received finished task %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-50" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-50', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt> </tt>
</div><a name="L250"></a><tt class="py-lineno">250</tt>  <tt class="py-line"> </tt>
<a name="TaskQueue._get_proxy"></a><div id="TaskQueue._get_proxy-def"><a name="L251"></a><tt class="py-lineno">251</tt> <a class="py-toggle" href="#" id="TaskQueue._get_proxy-toggle" onclick="return toggle('TaskQueue._get_proxy');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.TaskQueue-class.html#_get_proxy">_get_proxy</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="TaskQueue._get_proxy-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="TaskQueue._get_proxy-expanded"><a name="L252"></a><tt class="py-lineno">252</tt>  <tt class="py-line">        <tt class="py-docstring">'''Return a proxy to this queue as it is to be known by its dispatcher.</tt> </tt>
<a name="L253"></a><tt class="py-lineno">253</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L254"></a><tt class="py-lineno">254</tt>  <tt class="py-line"><tt class="py-docstring">        Basically added to support Pyro task queues; this implementation just</tt> </tt>
<a name="L255"></a><tt class="py-lineno">255</tt>  <tt class="py-line"><tt class="py-docstring">        returns self.</tt> </tt>
<a name="L256"></a><tt class="py-lineno">256</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L257"></a><tt class="py-lineno">257</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt> </tt>
</div></div><a name="L258"></a><tt class="py-lineno">258</tt>  <tt class="py-line"> </tt>
<a name="L259"></a><tt class="py-lineno">259</tt>  <tt class="py-line"><tt class="py-comment">#========== Worker =============================================================</tt> </tt>
<a name="L260"></a><tt class="py-lineno">260</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="Worker"></a><div id="Worker-def"><a name="L261"></a><tt class="py-lineno">261</tt> <a class="py-toggle" href="#" id="Worker-toggle" onclick="return toggle('Worker');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="papyros.base.Worker-class.html">Worker</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Worker-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="Worker-expanded"><a name="L262"></a><tt class="py-lineno">262</tt>  <tt class="py-line">    <tt class="py-docstring">'''A I{Worker} is assigned L{tasks &lt;Task&gt;} from a L{TaskDispatcher},</tt> </tt>
<a name="L263"></a><tt class="py-lineno">263</tt>  <tt class="py-line"><tt class="py-docstring">    executes them and returns them to the respective L{TaskQueue} that submitted</tt> </tt>
<a name="L264"></a><tt class="py-lineno">264</tt>  <tt class="py-line"><tt class="py-docstring">    the task.</tt> </tt>
<a name="L265"></a><tt class="py-lineno">265</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L266"></a><tt class="py-lineno">266</tt>  <tt class="py-line"><tt class="py-docstring">    This class is not directly usable; it must be subclassed to provide a way to</tt> </tt>
<a name="L267"></a><tt class="py-lineno">267</tt>  <tt class="py-line"><tt class="py-docstring">    call L{execute_task}, typically in an infinite loop.</tt> </tt>
<a name="L268"></a><tt class="py-lineno">268</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L269"></a><tt class="py-lineno">269</tt>  <tt class="py-line"> </tt>
<a name="Worker.__init__"></a><div id="Worker.__init__-def"><a name="L270"></a><tt class="py-lineno">270</tt> <a class="py-toggle" href="#" id="Worker.__init__-toggle" onclick="return toggle('Worker.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.Worker-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">dispatcher</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Worker.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Worker.__init__-expanded"><a name="L271"></a><tt class="py-lineno">271</tt>  <tt class="py-line">        <tt class="py-docstring">'''Initialize this worker.</tt> </tt>
<a name="L272"></a><tt class="py-lineno">272</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L273"></a><tt class="py-lineno">273</tt>  <tt class="py-line"><tt class="py-docstring">        @param dispatcher: If not None, L{connect} to this dispatcher.</tt> </tt>
<a name="L274"></a><tt class="py-lineno">274</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L275"></a><tt class="py-lineno">275</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L276"></a><tt class="py-lineno">276</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">dispatcher</tt> <tt class="py-keyword">is</tt> <tt class="py-keyword">not</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L277"></a><tt class="py-lineno">277</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-51" class="py-name" targets="Method papyros.base.Worker.connect()=papyros.base.Worker-class.html#connect"><a title="papyros.base.Worker.connect" class="py-name" href="#" onclick="return doclink('link-51', 'connect', 'link-51');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">dispatcher</tt><tt class="py-op">)</tt> </tt>
</div><a name="L278"></a><tt class="py-lineno">278</tt>  <tt class="py-line"> </tt>
<a name="Worker.connect"></a><div id="Worker.connect-def"><a name="L279"></a><tt class="py-lineno">279</tt> <a class="py-toggle" href="#" id="Worker.connect-toggle" onclick="return toggle('Worker.connect');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.Worker-class.html#connect">connect</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">dispatcher</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Worker.connect-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Worker.connect-expanded"><a name="L280"></a><tt class="py-lineno">280</tt>  <tt class="py-line">        <tt class="py-docstring">'''Associate this worker to the given L{TaskDispatcher}.'''</tt> </tt>
<a name="L281"></a><tt class="py-lineno">281</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-52" class="py-name" targets="Method papyros.base.Worker.is_connected()=papyros.base.Worker-class.html#is_connected"><a title="papyros.base.Worker.is_connected" class="py-name" href="#" onclick="return doclink('link-52', 'is_connected', 'link-52');">is_connected</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L282"></a><tt class="py-lineno">282</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-53" class="py-name" targets="Method papyros.base.Worker.disconnect()=papyros.base.Worker-class.html#disconnect"><a title="papyros.base.Worker.disconnect" class="py-name" href="#" onclick="return doclink('link-53', 'disconnect', 'link-53');">disconnect</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L283"></a><tt class="py-lineno">283</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt> <tt class="py-op">=</tt> <tt class="py-name">dispatcher</tt> </tt>
<a name="L284"></a><tt class="py-lineno">284</tt>  <tt class="py-line">        <tt id="link-54" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-54', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s connected to %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">dispatcher</tt><tt class="py-op">)</tt> </tt>
</div><a name="L285"></a><tt class="py-lineno">285</tt>  <tt class="py-line"> </tt>
<a name="Worker.disconnect"></a><div id="Worker.disconnect-def"><a name="L286"></a><tt class="py-lineno">286</tt> <a class="py-toggle" href="#" id="Worker.disconnect-toggle" onclick="return toggle('Worker.disconnect');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.Worker-class.html#disconnect">disconnect</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Worker.disconnect-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Worker.disconnect-expanded"><a name="L287"></a><tt class="py-lineno">287</tt>  <tt class="py-line">        <tt class="py-docstring">'''Disassociate this worker from its L{TaskDispatcher}.'''</tt> </tt>
<a name="L288"></a><tt class="py-lineno">288</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-55" class="py-name"><a title="papyros.base.Worker.is_connected" class="py-name" href="#" onclick="return doclink('link-55', 'is_connected', 'link-52');">is_connected</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L289"></a><tt class="py-lineno">289</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L290"></a><tt class="py-lineno">290</tt>  <tt class="py-line">            <tt id="link-56" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-56', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s disconnected from %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt><tt class="py-op">)</tt> </tt>
</div><a name="L291"></a><tt class="py-lineno">291</tt>  <tt class="py-line"> </tt>
<a name="Worker.is_connected"></a><div id="Worker.is_connected-def"><a name="L292"></a><tt class="py-lineno">292</tt> <a class="py-toggle" href="#" id="Worker.is_connected-toggle" onclick="return toggle('Worker.is_connected');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.Worker-class.html#is_connected">is_connected</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Worker.is_connected-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Worker.is_connected-expanded"><a name="L293"></a><tt class="py-lineno">293</tt>  <tt class="py-line">        <tt class="py-docstring">'''Check whether this worker is L{connected &lt;connect&gt;}.'''</tt> </tt>
<a name="L294"></a><tt class="py-lineno">294</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt> <tt class="py-keyword">is</tt> <tt class="py-keyword">not</tt> <tt class="py-name">None</tt> </tt>
</div><a name="L295"></a><tt class="py-lineno">295</tt>  <tt class="py-line"> </tt>
<a name="Worker.execute_task"></a><div id="Worker.execute_task-def"><a name="L296"></a><tt class="py-lineno">296</tt> <a class="py-toggle" href="#" id="Worker.execute_task-toggle" onclick="return toggle('Worker.execute_task');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="papyros.base.Worker-class.html#execute_task">execute_task</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Worker.execute_task-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Worker.execute_task-expanded"><a name="L297"></a><tt class="py-lineno">297</tt>  <tt class="py-line">        <tt class="py-docstring">'''Fetch an unassigned L{Task} from this worker's L{TaskDispatcher},</tt> </tt>
<a name="L298"></a><tt class="py-lineno">298</tt>  <tt class="py-line"><tt class="py-docstring">        execute it and send it back to the L{TaskQueue} it originated from.</tt> </tt>
<a name="L299"></a><tt class="py-lineno">299</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L300"></a><tt class="py-lineno">300</tt>  <tt class="py-line"><tt class="py-docstring">        @rtype: bool</tt> </tt>
<a name="L301"></a><tt class="py-lineno">301</tt>  <tt class="py-line"><tt class="py-docstring">        @returns: True if a task was executed, False if there are no unassigned</tt> </tt>
<a name="L302"></a><tt class="py-lineno">302</tt>  <tt class="py-line"><tt class="py-docstring">            tasks in the dispatcher.</tt> </tt>
<a name="L303"></a><tt class="py-lineno">303</tt>  <tt class="py-line"><tt class="py-docstring">        @raises RuntimeError: If this worker is not L{connected &lt;is_connected&gt;}.</tt> </tt>
<a name="L304"></a><tt class="py-lineno">304</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L305"></a><tt class="py-lineno">305</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-57" class="py-name"><a title="papyros.base.Worker.is_connected" class="py-name" href="#" onclick="return doclink('link-57', 'is_connected', 'link-52');">is_connected</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L306"></a><tt class="py-lineno">306</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">RuntimeError</tt><tt class="py-op">(</tt><tt class="py-string">'Not connected to a dispatcher'</tt><tt class="py-op">)</tt> </tt>
<a name="L307"></a><tt class="py-lineno">307</tt>  <tt class="py-line">        <tt class="py-name">assignment</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dispatcher</tt><tt class="py-op">.</tt><tt id="link-58" class="py-name" targets="Method papyros.base.TaskDispatcher._assign_task()=papyros.base.TaskDispatcher-class.html#_assign_task"><a title="papyros.base.TaskDispatcher._assign_task" class="py-name" href="#" onclick="return doclink('link-58', '_assign_task', 'link-58');">_assign_task</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L308"></a><tt class="py-lineno">308</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">assignment</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L309"></a><tt class="py-lineno">309</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L310"></a><tt class="py-lineno">310</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L311"></a><tt class="py-lineno">311</tt>  <tt class="py-line">            <tt id="link-59" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-59', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt><tt class="py-name">task_queue</tt> <tt class="py-op">=</tt> <tt class="py-name">assignment</tt> </tt>
<a name="L312"></a><tt class="py-lineno">312</tt>  <tt class="py-line">            <tt id="link-60" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-60', 'task', 'link-1');">task</a></tt><tt class="py-op">.</tt><tt id="link-61" class="py-name"><a title="papyros.base.TaskDispatcher.execute
papyros.execute
papyros.task.Task.execute" class="py-name" href="#" onclick="return doclink('link-61', 'execute', 'link-4');">execute</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L313"></a><tt class="py-lineno">313</tt>  <tt class="py-line">            <tt class="py-name">task_queue</tt><tt class="py-op">.</tt><tt id="link-62" class="py-name" targets="Method papyros.base.TaskQueue._get_finished()=papyros.base.TaskQueue-class.html#_get_finished"><a title="papyros.base.TaskQueue._get_finished" class="py-name" href="#" onclick="return doclink('link-62', '_get_finished', 'link-62');">_get_finished</a></tt><tt class="py-op">(</tt><tt id="link-63" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-63', 'task', 'link-1');">task</a></tt><tt class="py-op">)</tt> </tt>
<a name="L314"></a><tt class="py-lineno">314</tt>  <tt class="py-line">            <tt id="link-64" class="py-name"><a title="papyros.log" class="py-name" href="#" onclick="return doclink('link-64', 'log', 'link-7');">log</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'%s sent finished task %s back to %s'</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt id="link-65" class="py-name"><a title="papyros.task" class="py-name" href="#" onclick="return doclink('link-65', 'task', 'link-1');">task</a></tt><tt class="py-op">,</tt> <tt class="py-name">task_queue</tt><tt class="py-op">)</tt> </tt>
<a name="L315"></a><tt class="py-lineno">315</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">True</tt> </tt>
</div></div><a name="L316"></a><tt class="py-lineno">316</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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